Snapshot of public data from 30 Oct 2026, 10:41:14. This data is not updated until the API is deployed.

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CVE-2026-85880

Microsoft Windows Heap-Based Buffer Overflow Vulnerability

UrgentCVSS 7.8 v3.1Exploited

Why this priority

?

Generic watch priority computed by public, versioned rules. It does not know your assets. See the glossary

  • Présent dans le catalogue CISA KEV (exploitation confirmée)

Description

Microsoft Windows Advanced Local Procedure Call contains a heap-based buffer overflow vulnerability that allows an attacker to elevate privileges locally.

Affected products

VendorProductVersions
MicrosoftWindows 10 Version 1607
  • from 10.0.14393.0 to 10.0.14393.9512 excluded
MicrosoftWindows 10 Version 1809
  • from 10.0.17763.0 to 10.0.17763.9245 excluded
MicrosoftWindows 10 Version 21H2
  • from 10.0.19044.0 to 10.0.19044.7725 excluded
MicrosoftWindows 10 Version 22H2
  • from 10.0.19045.0 to 10.0.19045.7725 excluded
MicrosoftWindows Server 2012 (Server Core installation)
  • from 6.2.9200.0 to 6.2.9200.26349 excluded
MicrosoftWindows Server 2012 R2 (Server Core installation)
  • from 6.3.9600.0 to 6.3.9600.23398 excluded
MicrosoftWindows Server 2012 R2
  • from 6.3.9600.0 to 6.3.9600.23398 excluded
MicrosoftWindows Server 2012
  • from 6.2.9200.0 to 6.2.9200.26349 excluded
MicrosoftWindows Server 2016 (Server Core installation)
  • from 10.0.14393.0 to 10.0.14393.9512 excluded
MicrosoftWindows Server 2016
  • from 10.0.14393.0 to 10.0.14393.9512 excluded
MicrosoftWindows Server 2019 (Server Core installation)
  • from 10.0.17763.0 to 10.0.17763.9245 excluded
MicrosoftWindows Server 2019
  • from 10.0.17763.0 to 10.0.17763.9245 excluded
MicrosoftWindows Server 2022
  • from 10.0.20348.0 to 10.0.20348.5622 excluded
MicrosoftWindowsAll versions

Revision history

  1. Revision 2

    Update : Affected versions changed

  2. Revision 1

    New record

Qualification

CVSS severity
?

Technical severity score between 0 and 10, with its version (3.1, 4.0). See the glossary

7.8 HIGH CVSS v3.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C
KEV catalog
?

CISA catalog of vulnerabilities with confirmed exploitation. Absence from the catalog does not prove absence of exploitation. See the glossary

Listed
Exploitation
Confirmed
EPSS probability
?

Probability, between 0 and 1, that a vulnerability is exploited in the next 30 days, published daily by FIRST. Always dated. See the glossary

Unknown
Confidence
?

Quality of the sources behind the record. It is not a risk score. See the glossary

High

Priority rules, version 1

CISA KEV catalog

Added on
8 September 2026
Federal due date
22 September 2026
Required action
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Ransomware use
Unknown

Record

Published on
8 September 2026
Weaknesses (CWE)
CWE-122, CWE-908

Sources

References

CVE-2026-85880 Microsoft Windows Heap-Based Buffer Overflow Vulnerability · Avanguard TACTIC